Of course, they aren’t their personal cell phones, but the numbers really do work. It’s true, we just tried them.

First, we called Kendall‘s line.

The phone rang four times before the voicemail picked up. “Hi, this is Kendall, I’m sorry I can’t get to the phone right now, but please have a lovely day and call back whenever you want to hear my voice. Bye!”

Kylie‘s voicemail starts with a prank “Hello…” before she continues, “Hey, it’s Kylie Jenner. Have a great day, thanks for calling.”

Naturally, a billion people are going to call these numbers, so it’s no surprise that both lines end with “The mailbox is full and cannot accept any messages at this time. Goodbye.” And then the line goes dead.

The 21-year-old model was joined by her older sister Kourtney Kardashian while hanging out on a yacht on Monday (May 22) in Cannes, France. Kourtney and Kendall were later seen hopping on a jet ski to ride around on the waves!